Loom



Aug. 11/1925. 1,548,994

W. HARRIS LOOM Original Filed Sept. 22. 19224 Patented Aug. 11, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM HARRIS, OF IPATERSON, NEW JERSEY.

LOOM.

Original application filed September 22, 1924, Serial No. 739,044. Divided and this application filed June s, 1925. Serial No. 35,598.

To all whom it may concern:

Be it known that I, IVILLIAM HARRIs, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Looms, of which the following is a specification.

This invention contemplates the employment in a loom of a flexible tensioning connection for maintaining the sheet of warp and woven fabric taut, and one object of the invention is to maintain that part of the sheet taut which extends from the sand roller, or equivalent means for advancing the sheet, to the cloth beam, or equivalent means for winding up the fabric end of the sheet, without the tensioning connection interfering with the direct or positive advance of the sheet by the advancing means.

In the drawing,

Fig. 1 is a side elevation and Fig. 2 a front elevation of a loom embodying the invention.

19 is the warp beam, journaled in the loom frame 2, which has any suitable breast-beam%3. 24L is the sand-roller journaled in the 00m frame and here driven by the following means: A lever 26 oscillated from, say, one of the lay-swords 26 of the loom through a suitable link 26, a pawl 27 on the lever, a ratchetwheel 28 adapted to be rotatively advanced step by step by the pawl, a holding pawl 29 for the ratchet wheel, and gearing 30 for transmitting rotation from the ratchet-wheel to the sandroller. The sheet of warp A and cloth B extends from the warp-beam, on which it is wound, forward over the breast-beam, then down around the sand-roller, and then up over a guide roller 25 hung in pivoted links 25 and then down to the cloth-beam 17, on which it is wound up.

On the warp-beam and cloth-beam are respectively fixed the sprocket-wheels 19 and 17. On the frame above the warp-beam is an idler 18 journaled.

16 is a flexible endless connection which extends around and in engagement with the teeth of the sprocket-wheels 19" and 17.and over the idler 18. It has a bight or bend 16 which depends from the idler and warpbeam back of the latter; it also has a slack 16 therein between the warp-beam and cloth-beam sprocket-wheels. There is a weight-carrier 21 for a weight 22 hung in the bight 16 by means of a pulley 20.

By this construction the part of the sheet delivered by the sand-roller is constantly subject to the tendency of the tensioning connection 16 to wind the fabric end thereof on the cloth-beam compactly without said connection interfering with the direct or positive advance of the sheet by the advancing means; also the part of the sheet relatively rearward of the sand-roller, to wit, the part in which the actual weaving operations take place, is kept taut by the tendency of the connection to rotate the warp-beam in the direction to wind the sheet thereon.

When the weight reaches the limit of its activity, due to the diameter of the wound mass on the cloth-beam increasing in diameter and hence its peripheral speed decreas ing relatively to the peripheral speed of the sand-roller, the weaver removes the chain and rehabilitates it on the sprocket-wheels 1'7 and 19.

The present application is a division of my application Serial No. 7 39,044.

Having thus fully described my invention what I claim and desire to secure by Letters Patent is:

1. In combination, with that moving system in a loom which includes rotary means to advance the sheet of warp and woven fabric and rotary means to supply the warp, rotary means to wind up the fabric end of the sheet revoluble independently of the rotary means for advancing the sheet of warp and woven fabric, and a flexible tensioning connection in tractive engagement with a rotary part of the winding-up means and a rotary part of said system and exerting force to rotate the former in the direction to wind up the fabric.

2. In a loom, the combination, with a support, rotary means to supply the warp, ro-

tary means to wind up the fabric end of the sheet of warp and woven fabric, and means to advance the sheet engaged therewith relatively between the first two means, a flexible tensioning connection in tractive engagement with a rotary part of the winding-up means and a rotary part of the warp-supply means and exerting force on each of them in the direction to wind no the corresponding end of the sheet.

In testimony whereof I a'liix my signature.

l/VILLIAM HARRIS. 

